Author Topic: 1975 CB500K1 Engine reassembly in frame?  (Read 257 times)

Offline martin_uk

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1975 CB500K1 Engine reassembly in frame?
« on: April 11, 2024, 09:17:17 PM »
Started to reassemble my CB500K1 engine and finding just the bottom end quite a lump to handle.

I wanted to double check that it is possible to reassemble everything in the frame once the crank case halves are together and installed and whether anyone else has tried.

I have a motorbike lift which means it is easier to work on at comfortable height.

I have rebuilt a number of CB750 sohc engines and no option other than to assemble up to cam cover, but I was a few years younger then  :D
1977 CB750F1
1977 CB750f1 836
1978 CB750F1
1975 CB500K1

Triumph Street Triple 675R
Ducati 800 Icon Scrambler
Triumph 3TA
AJS 350 mod16
BSA BantamD1
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Honda CB500X
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Offline Nurse Julie

  • 1977 CB550/4 Mongrel Brat. 1974 UK 500/4 K1. Honda CD250u.
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Re: 1975 CB500K1 Engine reassembly in frame?
« Reply #1 on: April 11, 2024, 09:31:25 PM »
Yes, it is easy to build up in the frame. Plenty of clearance available between top of breather cover and frame, unlike the 750's.
« Last Edit: April 11, 2024, 09:33:29 PM by Nurse Julie »
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Offline martin_uk

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Re: 1975 CB500K1 Engine reassembly in frame?
« Reply #2 on: April 11, 2024, 09:42:34 PM »
Yes, it is easy to build up in the frame. Plenty of clearance available between top of breather cover and frame, unlike the 750's.

Thanks Julie
1977 CB750F1
1977 CB750f1 836
1978 CB750F1
1975 CB500K1

Triumph Street Triple 675R
Ducati 800 Icon Scrambler
Triumph 3TA
AJS 350 mod16
BSA BantamD1
Honda C90zz
Honda CB500X
BSA WD B40 350

Offline McCabe-Thiele (Ted)

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Re: 1975 CB500K1 Engine reassembly in frame?
« Reply #3 on: April 11, 2024, 11:07:53 PM »
Make sure you leave the sump & oil filter off off it's pretty maneagable just as the crankcase halves, plenty of space to fit the block upwards afterwards.

I used a piece of cardboard in the shape of the sump held in place with a couple of bolts to keep the dog hairs out until I fitted the sump etc.
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html

Offline martin_uk

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Re: 1975 CB500K1 Engine reassembly in frame?
« Reply #4 on: April 12, 2024, 12:29:38 PM »
Make sure you leave the sump & oil filter off off it's pretty maneagable just as the crankcase halves, plenty of space to fit the block upwards afterwards.

I used a piece of cardboard in the shape of the sump held in place with a couple of bolts to keep the dog hairs out until I fitted the sump etc.

Thanks Ted
1977 CB750F1
1977 CB750f1 836
1978 CB750F1
1975 CB500K1

Triumph Street Triple 675R
Ducati 800 Icon Scrambler
Triumph 3TA
AJS 350 mod16
BSA BantamD1
Honda C90zz
Honda CB500X
BSA WD B40 350

 

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